A group of friends attend a medical trial retreat. Run by the suspicious Dr. Feldman, they soon discover the shocking secret of why they are there.

A group of colleagues crash land on a mysterious island that they cannot escape. They discover they are not alone when they encounter an array of blood thirsty creatures and dinosaurs out to get them. Will they survive the island?

The beast is back and her venom is deadlier than ever. When newcomer Lola is welcomed into Medusa's circle, she endures a ritual to bring her closer to her new sisters.